The bulb had gone out long ago and it is the weirdest looking thing I have ever seen, I have little hope of finding a replacement, but here is the info anyway: GE Globe type bulb, (large) 2 pin base, 3200 degrees Kelvin, 120V 2MIG48/18. The bottom says K KBO 74, it's 9 inches in length and 18 inches around at it's largest point. The filament would be best described as a "ladder" consisting of four seperate elements (rungs). I have NO IDEA what the wattage of the bulb is so that puts a damper on things.

I emailed several bulb sites that claimed to have obsolete bulbs but I got a lot of head scratching.

Also, there is a receptacle in the back of the spot that you plug a cord into and then into a wall outlet, the receptacle has one vertical hole and one horizontal??? Is this 220V? The receptacle then leads 2 sets of 2 wires, white and black, the white go to the bulb socket, and the black go to the motor to turn the color wheel. If the plug is 220V why is the bulb 120V? The cord for the spotlight is long gone and there aren't any similar outlets in the booth.

Someone suggested converting it to Xenon, but it's so simple right now..couldn't I take out the bulb socket and replace it with a newer one and run AC? That makes more sense to me.

Of course, if any of you wonderful people know where I can get the original type of bulb, or have any info on the company Motion Picture Accessories Co. that would make things much easier.

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That plug on the spotlight is 120V, 20 amp. Normal household outlets have two parallel sockets for 15 amp circuits. Commercial outlets sometimes are wired for 20 amps and will have a straight slot and a "T" shaped slot. Then when you have a device that requires 20 amps, the plug will have the pattern you described to prevent it being plugged into a less than 20 amp circuit.

A contractors supply store (or even Home Depot or Loews) should have a 20 amp power cord that you could use with the right ends. But, I would aggree with changing the plug out to a modern 3-wire to get the grounding protection.

It sounds like it was a 2kw lamp. Putting a modern quartz bi-pin replacement in should work fine, but you may have to modify the location of the mounting to get it to focus right.

Good luck,

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The bulb is not a tube like for a halogen worklight, it's a globe with 2 pins at the base.

I wonder if you guys are picturing a box spot with the folding flaps on it? This spot looks more like a carbon arc lamphouse with a decorated plate just after the lens and a motorized color wheel in front of that plate.

The bulb fits in the socket and the circular reflector then screws onto the socket just behind the bulb.

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Gordon: Doesn't it become easier to gather light from something approaching a point source? For example, consider how little use low pressure sodium has compared to high pressure sodium despite the former's significantly higher raw efficency. Much more awkward to design good reflectors for their large envelopes.

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